I am a single bachelor living in China, but I'm a foreigner. For
expats, it's pretty good being single, as there is that foreigner
mystique and the general idea that all expats are rich, so
finding women is pretty easy.

As for Chinese, it's a bit of a different story. The actual
number is closer to 38 million more men, but also realize that
this doesn't mean either single men, gay men, or anything else -
it's an overall statistic.

That said, there are a LOT of single Chinese guys. Almost every
guy in my office is between 21-30 and they're almost all single.
To even consider getting a wife, a Chinese guy needs to own a
home (apartment in a big city), a car, and preferably make XXX
money every month. The women have high expectations (as they're
expected to pop out their one-child policy kid before the age of
24-25).

Also keep in mind that there are A LOT of girls/women in various
types of sex-related jobs, and many rich successful men get
married to someone their family likes then buys 2 or 3 more
apartments for their mistresses.

It's a skewed situation either way, but basically, unless you
have money as a single guy in China, you're not that well off.
Many girls will date the fat, disgusting, old guy with a wife
because he can give them $10,000 a month over the handsome,
young, kind guy that lives paycheck to paycheck.

BTBT's view was
mostly confirmed by user
King_of_Murkwood claiming to be a native
Chinese woman:

As a young Chinese woman who's lived there for the first 18 years
of my life, I can say with confidence that things are pretty grim
for the boys and girls back home. Men are expected to possess
substantial wealth in order for them to consider marriage and
family. This in turn, in my opinion, perpetuates the misogynist
notion of women being commodities, because the rich guy almost
always gets the girl.

Another aspect of the problem is the rural/urban difference. A
rich guy from the city has a much bigger advantage than his rural
counterpart, because the rural population tends to be more
conservative and their families more extended. That means, a city
woman who marries a country guy basically just marries his entire
family back in some small rural town.

So in the end, the vast population of bachelors in China is
mostly country guys working in cities.

I have visited China on two occasions, once when I was 18 and the
other this year (I'm 23 now). I'm British so it was relatively
easy to pick up girls in clubs, and as /r/BoTeeBoTines said,
the foreigner mystique is quite rampant, especially in the
smaller cities where I visited.

However, for the Chinese guys I met it was a completely different
story, almost none of them had ever had a girlfriend, and the
only one that did had a German girlfriend...